Zpacks Big Stuff Sack

The Zpacks Big Stuff Sack is a large Dyneema Composite Fabric sack for bulky clothing, bigger tents or sleeping bags, sized to sit sideways across a larger backpack rather than stand upright inside it. It has no dry-bag roll-top closure, so treat it as an organisation and compression tool rather than rain protection. For genuine waterproofing in wet weather, pair it with a pack liner or one of Zpacks' roll-top dry bags instead.